CN213065051U - Underground pipeline thrust stopping structure - Google Patents

Abstract

The utility model discloses an underground pipeline thrust structure relates to piping erection technical field, an underground pipeline thrust structure, including thrust block body, thrust block body inner chamber is provided with an at least pipeline channel who runs through thrust block body surface face, pipeline channel is including the kink. The utility model discloses a kink at many pipeline sets up the concrete thrust block body, and many pipeline's kink is all wrapped up at the thrust block internally by the interval. When the axial thrust of the fluid in the conveying pipeline reaches the bent part, the corresponding axial thrust can be transmitted to the thrust block body, so that the operating pressure of the bent part of the pipeline can be relieved, the impact of the axial thrust generated by the fluid in the pipeline on the bent part of the pipeline is reduced, and the bent part of the conveying pipeline is prevented from being damaged. The center of the bending part is positioned on the central line of the thrust block body, so that the stress balance of the thrust block body is facilitated, and the service life of the thrust block body is prolonged.

Description

Underground pipeline thrust stopping structure

Technical Field

The utility model relates to a pipeline installation technical field especially relates to an underground pipeline thrust structure.

Background

At present, the demand of municipal water and industrial water is increasing, high-pressure and long-distance underground water transmission pipelines are increasing, unbalanced thrust is generated in the pipelines in the underground pressurized water transmission system, mainly occurs at the positions of direction changes, such as elbows, Y-shaped elbows, tee joints and the like, reducer pipes with variable cross-sectional areas and the tail ends of the pipelines, and the unbalanced thrust can cause the pipelines to be impacted to generate vibration if not limited enough, so that the pipeline joints or the pipelines are damaged, and a thrust design is needed.

The thrust mode adopted by the existing underground pipeline mainly aims at reducing the pipe turning angle and resisting the axial thrust of the pipeline by utilizing the self weight of a plurality of sections of interconnected pipe sections, the weight of water in the pipe and the pressure of backfilled soil and the friction force generated by the surrounding soil, but the method can not meet the requirement of stable operation of the underground pipeline along with the continuous increase of underground facilities and the increase of pipeline conveying pressure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a underground pipeline thrust structure is provided, axial thrust that can balanced fluid produced the pipeline kink in the pipeline prevents that this axial thrust from damaging the pipeline kink.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides an underground pipeline thrust structure, includes thrust block body, thrust block body inner chamber is provided with at least one pipeline passageway that runs through thrust block body surface, pipeline passageway is including the kink.

Furthermore, the thrust block body includes thin terminal surface and thick terminal surface, the area that thin terminal surface increases to thick terminal surface in proper order, and a plurality of the center of kink is along the center of thin terminal surface to the center horizontal arrangement of thick terminal surface, just the outside of kink all faces the thick terminal surface of thrust block body.

Furthermore, at least one straight pipe channel is arranged in the inner cavity of the thrust block body.

Furthermore, the outer surface of the thrust block body is provided with at least one observation hole, and one observation hole is correspondingly communicated with one bent part.

The utility model has the advantages that: the utility model discloses a kink at many pipeline sets up the concrete thrust block body, and many pipeline's kink is all wrapped up at the thrust block internally by the interval. When the axial thrust of the fluid in the conveying pipeline reaches the bent part, the corresponding axial thrust can be transmitted to the thrust block body, so that the operating pressure of the bent part of the pipeline can be relieved, the impact of the axial thrust generated by the fluid in the pipeline on the bent part of the pipeline is reduced, and the bent part of the conveying pipeline is prevented from being damaged. The center of the bending part is positioned on the central line of the thrust block body, so that the stress balance of the thrust block body is facilitated, and the service life of the thrust block body is prolonged.

Drawings

Fig. 1 is a top view of the present invention;

FIG. 2 is a sectional view taken along the direction of FIG. 1A;

FIG. 3 is a top view of the tee duct of the present invention;

FIG. 4 is a top view of the straight tube passageway of the present invention;

shown in the figure: 1-a thrust block body; 101-thin end face; 102-a coarse end face; 103-a viewing aperture; 2-a pipeline channel; 201-a bending part; 3-pipe connection; 4-straight pipe channel; l-center line.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1, fig. 2 and fig. 3, the utility model discloses a thrust structure of underground pipeline, including thrust block body 1, thrust block body 1 inner chamber is provided with at least one pipeline passageway 2 that runs through thrust block body 1 surface, pipeline passageway 2 is including kink 201. The utility model discloses the setting is in the department of buckling of underground piping, and the underground piping setting is in the pipe-line passageway 2 of the 1 inner chamber of thrust block body, and the department of buckling of underground piping corresponds installs the utility model discloses a kink 201 department is favorable to protecting the department of buckling atress condition of underground piping, and the axial thrust that produces is located to the pipeline department of buckling because of the fluid is balanced in the pipeline prevents this axis thrust damage pipeline kink. The bending position of the underground pipeline has various conditions, such as a two-way bending position, as shown in figure 1; there are also bends, such as tees, as illustrated in fig. 3; and a four-way, five-way, etc., and this embodiment will not be described. The utility model discloses an underground pipeline thrust structure is formed by concrete placement, and the connection of underground pipeline should be carried out earlier during the construction, after the pipeline is suppressed and is accomplished to pass through, formwork and concrete placement are carried out at pipeline elbow department, use the fine aggregate concrete as far as possible during pouring, need pay attention to the protection to the pipeline, carry out the test of once suppressing again after concrete maintenance accomplishes the form removal, backfill sandy soil after confirming to be correct, wherein backfill soil will guarantee 95% compactness; at this in-process, the fashioned concrete is pour to pipeline department of buckling, promptly the utility model discloses an underground piping thrust structure. Through setting up in underground piping department of buckling the utility model discloses an underground piping thrust structure is favorable to protecting the department of buckling atress condition of underground piping, and the axial thrust that produces is located to the pipeline department of buckling because of the fluid is balanced in the pipeline, prevents that this axis thrust from damaging the pipeline kink.

The shape of thrust block body 1 is various, for example the ball shape, the cuboid, the polyhedron, ellipsoid etc. the shape is unrestricted, and the kink 201 can set up in any position of thrust block body 1 inner chamber, and in this embodiment, for material saving, reduce cost, simultaneously also need guarantee the stability of thrust block body 1 structure, makes kink 201 department atress even, thrust block body 1 includes thin terminal surface 101 and thick terminal surface 102, thin terminal surface 101 increases in proper order to the area of thick terminal surface 102, and is a plurality of the center of kink 201 is along the center of thin terminal surface 101 to the central horizontal arrangement of thick terminal surface 102, just the outside of kink 201 all faces the thick terminal surface 102 of thrust block body 1. The thin end face 101 and the thick end face 102 can be rectangular, circular, triangular, polygonal and the like, that is, the center of the bending part 201 is located on the center line of the thrust block body 1, that is, the bending part of the underground pipeline is located on the center line of the thrust block body 1, the center line is L in fig. 1, the center of the bending part 201 is located on the center line of the thrust block body 1, so that the stress of the bending part 201 is ensured to be uniform, meanwhile, the stress of the whole thrust block body 1 is uniform, and the structural stability of the thrust block body 1 is ensured; an acute angle and an obtuse angle are formed at the bent part 201, the outer side of the bent part 201 is the direction of the obtuse angle formed at the bent part 201, because the outer side of the bent part 201 faces the thick end face 102 of the thrust block body 1, the thin end face 101 is free from axial thrust generated by fluid at the pipeline bending part, the thick end face 102 mainly receives axial thrust generated by the fluid at the pipeline bending part, the area from the thin end face 101 to the thick end face 102 is sequentially increased, the structural stability of the thrust block body 1 is ensured, the area of the thin end face 101 is reduced, construction materials are saved, and the cost is reduced.

Underground conduit's the condition is various, and when the return bend was put together side by side with the straight tube, it was difficult alone to set up thrust block 1 in the department of buckling of return bend, in order to adapt to underground conduit's the complex condition, the return bend department of better protection underground conduit, thrust block 1 inner chamber still is provided with at least one straight tube passageway 4. As shown in figure 4, by adding the straight pipe channel 4, when the straight pipe and the bent pipe are arranged side by side, the straight pipe and the bent pipe are both arranged in the inner cavity of the thrust block body 1, so that the construction is more convenient, and the bent pipe and the straight pipe are protected simultaneously.

Because underground piping kink all is the pipe connection department 3 of straight tube and return bend usually, if pipe connection department 3 just is located thrust block 1 inner chamber, for the convenient leak detection of later stage pipeline, thrust block 1's surface is provided with at least one observation hole 103, and an observation hole 103 corresponds one of intercommunication kink 201. As shown in fig. 1, the observation hole 103 is provided only when one pipe joint 3 is located just in the inner cavity of the thrust block body 1, and the observation hole 103 is not provided when one pipe joint 3 is not located in the inner cavity of the thrust block body 1. The viewing aperture 103 may be provided on a side adjacent the pipe connection 3.

Claims (4)

1. An underground pipe thrust structure comprising a thrust block (1), characterized in that: the inner cavity of the thrust block body (1) is provided with at least one pipeline channel (2) which runs through the surface of the thrust block body (1), and the pipeline channel (2) comprises a bending part (201).

2. The underground pipe thrust-stopping structure of claim 1, wherein: the thrust block body (1) comprises a thin end face (101) and a thick end face (102), the area from the thin end face (101) to the thick end face (102) is sequentially increased, the centers of the bending parts (201) are horizontally arranged along the center of the thin end face (101) to the center of the thick end face (102), and the outer sides of the bending parts (201) face the thick end face (102) of the thrust block body (1).

3. The underground pipe thrust-stopping structure of claim 1, wherein: the inner cavity of the thrust block body (1) is also provided with at least one straight pipe channel (4).

4. A thrust structure for underground piping according to claim 1, 2 or 3, characterized in that: the outer surface of the thrust block body (1) is provided with at least one observation hole (103), and one observation hole (103) is correspondingly communicated with one bending part (201).

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